From c196149fa1a1322a98c65c53fd5d1fe3c5acd917 Mon Sep 17 00:00:00 2001
From: Ronni Skansing <rskansing@gmail.com>
Date: Thu, 29 Jan 2026 22:19:25 +0100
Subject: [PATCH] Allow customs params to DNS\nMinor database index
 optimization

Signed-off-by: Ronni Skansing <rskansing@gmail.com>
---
 backend/database/campaignEvent.go | 25 ++++++++++++++++++++++---
 backend/database/factory.go       | 10 +++++++++-
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/backend/database/campaignEvent.go b/backend/database/campaignEvent.go
index 7de023b..8ac4baa 100644
--- a/backend/database/campaignEvent.go
+++ b/backend/database/campaignEvent.go
@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"gorm.io/gorm"
 )
 
 const (
@@ -24,8 +25,8 @@ type CampaignEvent struct {
 	Metadata string `gorm:"not null;default:''"`
 
 	// has one
-	CampaignID *uuid.UUID `gorm:"not null;index;type:uuid;"`
-	EventID    *uuid.UUID `gorm:"not null;index;type:uuid;"`
+	CampaignID *uuid.UUID `gorm:"not null;type:uuid;"`
+	EventID    *uuid.UUID `gorm:"not null;type:uuid;"`
 
 	// can has one
 	UserAgent string `gorm:";"`
@@ -37,7 +38,25 @@ type CampaignEvent struct {
 	RecipientID *uuid.UUID `gorm:"index;type:uuid;"`
 	Recipient   *Recipient
 
-	CompanyID *uuid.UUID `gorm:"index;type:uuid;index;"`
+	CompanyID *uuid.UUID `gorm:"type:uuid;"`
+}
+
+// Migrate creates composite index and removes redundant single-column indexes
+func (CampaignEvent) Migrate(db *gorm.DB) error {
+	// create composite index for campaign_id + event_id (used heavily in GetResultStats)
+	if err := db.Exec(`CREATE INDEX IF NOT EXISTS idx_campaign_events_campaign_event ON campaign_events(campaign_id, event_id)`).Error; err != nil {
+		return err
+	}
+
+	// remove redundant single-column indexes that are covered by the composite index
+	// ignore errors as indexes may not exist on fresh installs
+	db.Exec(`DROP INDEX IF EXISTS idx_campaign_events_campaign_id`)
+	db.Exec(`DROP INDEX IF EXISTS idx_campaign_events_event_id`)
+
+	// remove unused company_id index (column is never populated)
+	db.Exec(`DROP INDEX IF EXISTS idx_campaign_events_company_id`)
+
+	return nil
 }
 
 // RecipientCampaignEvent is a aggregated read-only model
diff --git a/backend/database/factory.go b/backend/database/factory.go
index d97365e..3c574d2 100644
--- a/backend/database/factory.go
+++ b/backend/database/factory.go
@@ -2,6 +2,7 @@ package database
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/phishingclub/phishingclub/config"
 	"github.com/phishingclub/phishingclub/errs"
@@ -16,9 +17,16 @@ func FromConfig(conf config.Config) (*gorm.DB, error) {
 	switch conf.Database().Engine {
 	case config.DefaultAdministrationUseSqlite:
 		var err error
+		// determine the correct separator for additional parameters
+		// use & if user already has query params, otherwise use ?
+		separator := "?"
+		if strings.Contains(conf.Database().DSN, "?") {
+			separator = "&"
+		}
 		dsn := fmt.Sprintf(
-			"%s?_journal_mode=WAL&_busy_timeout=5000&_synchronous=NORMAL&_foreign_keys=ON",
+			"%s%s_journal_mode=WAL&_busy_timeout=5000&_synchronous=NORMAL&_foreign_keys=ON",
 			conf.Database().DSN,
+			separator,
 		)
 		db, err = gorm.Open(sqlite.Open(dsn), &gorm.Config{
 			Logger: logger.Default.LogMode(logger.Silent),